Tag Archives: DIY

3D printed siren

A short post on a project from a while ago. It’s about a 3D printed “air raid” siren, which uses a brushless motor from an old 3.5 inch hard disk drive. Some people requested the source files, which are included in this post. The trick in making a lot of noise is to have a… Read More »

Eddy current ring launcher: practice 1

This entry is part 2 of 2 in the series Eddy current ring launcher

Time for a little experimentation with high voltages. To see how well the concept of launching a ring using Eddy currents works, I wanted to do a more serious test. Just to get some feeling for its behaviour, since theory alone is a bit boring. Thus, with this first prototype, no optimisations or whatsoever are… Read More »

Wake-up light, part 2: patterns

This entry is part 2 of 2 in the series Wake-up light

A short update for the wake-up light. Some quick (and dirty?) coding using an Arduino Pro Micro and the Fastled library already gives some nice results: The code uses the Fastled built-in HSV colorspace (hue, saturation, value). Although originally meant for RGB LEDs, it also seems to work fine for WWA (warm white, cold white,… Read More »

Wake-up light, part 1: casing

This entry is part 1 of 2 in the series Wake-up light

With these long nights, waking up can sometimes be challenging. Therefore, I wanted to make a wake-up light. Buying one is also one of the possibilities, but making one yourself is much more fun. You can also add some unique features. The idea is to not just have one light, but to use an LED… Read More »